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Konstantin Khlebnikov 7e85dc8cb3 net_sched: blackhole: tell upper qdisc about dropped packets 
When blackhole is used on top of classful qdisc like hfsc it breaks
qlen and backlog counters because packets are disappear without notice.

In HFSC non-zero qlen while all classes are inactive triggers warning:
WARNING: ... at net/sched/sch_hfsc.c:1393 hfsc_dequeue+0xba4/0xe90 [sch_hfsc]
and schedules watchdog work endlessly.

This patch return __NET_XMIT_BYPASS in addition to NET_XMIT_SUCCESS,
this flag tells upper layer: this packet is gone and isn't queued.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2018-06-17 08:42:33 +09:00
..
Kconfig net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
Makefile net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
act_api.c net: sched: don't disable bh when accessing action idr 2018-05-22 15:34:34 -04:00
act_bpf.c net/sched: fix NULL dereference in the error path of tcf_bpf_init() 2018-04-05 22:26:06 -04:00
act_connmark.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_csum.c net sched: Implemented get_fill_size routine for act_csum. 2018-05-03 11:15:58 -04:00
act_gact.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_ife.c net: sched: ife: handle malformed tlv length 2018-04-22 21:12:00 -04:00
act_ipt.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_meta_mark.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_meta_skbprio.c net sched actions: change IFE modules alias names 2017-10-12 22:13:20 -07:00
act_meta_skbtcindex.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_mirred.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_nat.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_pedit.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_police.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_sample.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_simple.c net/sched: act_simple: fix parsing of TCA_DEF_DATA 2018-06-08 18:49:19 -04:00
act_skbedit.c net sched actions: fix invalid pointer dereferencing if skbedit flags missing 2018-05-11 15:52:43 -04:00
act_skbmod.c net sched actions: fix refcnt leak in skbmod 2018-05-11 16:37:03 -04:00
act_tunnel_key.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
act_vlan.c net/sched: fix refcnt leak in the error path of tcf_vlan_init() 2018-05-16 14:41:44 -04:00
cls_api.c Revert "net: sched: cls: Fix offloading when ingress dev is vxlan" 2018-06-06 13:55:47 -04:00
cls_basic.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_bpf.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_cgroup.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_flow.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_flower.c cls_flower: Fix comparing of old filter mask with new filter 2018-06-04 17:03:37 -04:00
cls_fw.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_matchall.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_route.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_rsvp.c
…
cls_rsvp.h net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_rsvp6.c
…
cls_tcindex.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
cls_u32.c net_sched: switch to rcu_work 2018-05-24 22:56:15 -04:00
em_canid.c net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
em_cmp.c net_sched: cleanups 2011-01-19 23:31:12 -08:00
em_ipset.c netfilter: x_tables: move hook state into xt_action_param structure 2016-11-03 10:56:21 +01:00
em_ipt.c net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
em_meta.c net: convert sock.sk_refcnt from atomic_t to refcount_t 2017-07-01 07:39:08 -07:00
em_nbyte.c net: sched: em_nbyte: don't add the data offset twice 2018-01-24 14:52:40 -05:00
em_text.c net: Remove state argument from skb_find_text() 2015-02-22 15:59:54 -05:00
em_u32.c net_sched: cleanups 2011-01-19 23:31:12 -08:00
ematch.c net: sched: ematch: obtain net pointer from blocks 2017-10-16 21:00:40 +01:00
sch_api.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
sch_atm.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_blackhole.c net_sched: blackhole: tell upper qdisc about dropped packets 2018-06-17 08:42:33 +09:00
sch_cbq.c net: sch: sch_cbq: add extack support 2017-12-21 12:32:51 -05:00
sch_cbs.c net: sch: sch_cbs: add extack support 2017-12-21 12:32:51 -05:00
sch_choke.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_codel.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_drr.c net: sch: sch_drr: add extack support 2017-12-21 12:32:51 -05:00
sch_dsmark.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_fifo.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_fq.c net_sched: fq: take care of throttled flows before reuse 2018-05-02 16:37:38 -04:00
sch_fq_codel.c treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
sch_generic.c net: remove bypassed check in sch_direct_xmit() 2018-05-31 13:26:19 -04:00
sch_gred.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_hfsc.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_hhf.c treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
sch_htb.c net: sched: do not emit messages while holding spinlock 2018-04-01 20:53:50 -04:00
sch_ingress.c net: sched: allow ingress and clsact qdiscs to share filter blocks 2018-01-17 14:53:57 -05:00
sch_mq.c net: sched: mq: request stats from offloads 2018-05-29 09:49:16 -04:00
sch_mqprio.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_multiq.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_netem.c sch_netem: fix skb leak in netem_enqueue() 2018-03-07 11:18:14 -05:00
sch_pie.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_plug.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_prio.c net: sch: prio: Add offload ability for grafting a child 2018-02-28 12:06:01 -05:00
sch_qfq.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_red.c net: sched: red: avoid hashing NULL child 2018-05-18 13:52:32 -04:00
sch_sfb.c net: sch: api: add extack support in qdisc_create_dflt 2017-12-21 12:32:51 -05:00
sch_sfq.c net: sch: api: add extack support in tcf_block_get 2017-12-21 12:32:51 -05:00
sch_tbf.c net: sched: red: avoid hashing NULL child 2018-05-18 13:52:32 -04:00
sch_teql.c net: sched: sch: add extack for init callback 2017-12-21 12:32:50 -05:00